Objective To understand the etiology and clinical features of childhood bronchiectasis in China. Methods Data of 182 children diagnosed with bronchiectasis admitted in Children's Hospital of Chongqing Medical University from 1991 to May, 2015, and more than 20 cases in the Chinese literatures since 1990 were reviewed. Results The top three causes of bronchiectasis in 182 children (114 boys, 68 girls, median age:118 months) in Chongqing were post-infection, primary immunodeficiency and foreign body, with frequency of 29.7%, 7.7%, and 7.1%, respectively. Chronic wet cough was the most frequent feature. Diagnosis of bronchiectasis usually need to combine with chest CT findings, which showed that the lesions were at left lower lobe, right middle lobe and right lower lobe. The choice of antibiotics was based on bacterial cultures of respiratory secretions, and Streptococcus pneumoniae was the most frequently isolated bacteria in Chongqing. The most common three causes of bronchiectasis in children according to data of 572 cases ( 347 boys, 225 girls) in 7 cities of China including Chongqing were the same with that of Chongqing, 45.5%, 7.3%, and 5.6%, respectively. Conclusion Early diagnosis, identification of etiology and comprehensive management of bronchiectasis in children are benefitial for prognosis.

Primary ciliary dyskinesia (PCD) is an autosomal recessive or x-linked disorder of cilia structure and (or) function, with a morbidity of 1:10 000–1:50 000 from foreign reports, while epidemic data of PCD in China is not available yet. PCD is due to cilia biallelic gene mutations leading to impaired tissue structure and organ function. Clinical phenotypes include chronic infections of the respiratory tract, fertility problems, disorders of organ laterality, etc, and the percent age of Kartagener syndrome is about 50%. The frequently used diagnostic methods are nasal NO examination, high-speed video microscopy, electron microscopy, genetic tests, chest high-resolution computed tomography and spirometry at present. Each method has its highlights and disadvantages, meanwhile, effective diagnostic algorithm and therapeutic protocols are needed for further research.

Objective To determine the clinical features of Klebsiella pneumoniae pneumonia and antimicrobial resistance of Klebsiella pneumoniae, providing the basis for rational use of antibiotics. Methods Eighty-six strains of Klebsiella pneumoniae were isolated from the sputum specimen which collected from the inpatients in our hospital from Dec 2008 to Dec 2010,which were identified with Bio Merieum Vitek 2. A total of 86 children were enrolled in the study, which were divided into hospital infection/colonization group (n = 68) and community infection group (n = 18). Clinical information were recorded. Extended spectum β-lactamase (ESBLs) and antibiotic susceptibility of Klebsiella pneumoniae were determined. Results Klebsiella pneumoniae pneumonia in children mainly occured in infants, especially in infants with basic diseases.Clinical manifestations of Klebsiella pneumoniae pneumonia had no much difference from common pneumonia. The detection rate of ESBLs was high(76. 7%). ESBLs were found in 64 strains of the hospital infection/colonization group (94. 1% ,64/68) ,while in 2 strains of the community infection group (11. 1% ,2/18).There was a significant difference between the two groups (P ＜0. 01). The drug resistance of hospital infection/colonization group was significantly higher than that of community infection group. The strains of hospital infection/colonization group were sensitive with cefotan, piperacillin/tazobactam, carberpenem, amikacin and ciprofioxacin only, while were highly resistant to penicillins, cephalosporins and monoamine antibiotics.The average hospital stay of the hospital infection/colonization group was (15.0 ± 7. 1) d, while the other was (8. 2 ± 3. 8) d. There was a very significant difference between the two groups in average length of stay (P＜0.01). Conclusion Klebsieila pneumoniae pneumonia in children mainly occurs in infants with basic diseases. The symptoms are untypical. Klebsiella pneurmoniae multi-drug resistance is a serious problem,which must be paid attention to. We should make a difference between the two groups when antibiotics were prescribed.

OBJECTIVE:To observe the efficacy and safety of domestic cefepime in the treatment of patients with acute exacerbation of chronic obstructive pulmonary diseases (AECOPD) complicated with respiratory failure. METHODS:A total of ninety-six patients with AECOPD complicated with respiratory failure were randomly assigned to receive cefepime 2.0 g bid iv gtt (Group A,n=48) or cefoperazone/sulbactam (Group B,n=48) at a dose of 2.0 g bid iv gtt for 7～14 day. RESULTS:The effective rate was 82% for Group A versus 62% for Group B(P0.05). CONCLUSION:The efficacy of cefepime is higher than that of cefoperazone/sulbactam in the treatment of patients with AECOPD complicated with respiratory failure,but both had good safety.

OBJECTIVE:To evaluate the cough-relieving and sputum-eliminating efficacy and safety of Guaifenesin Pseudoephedrine Hydrochloride-Codeine Phosphate Oral Solution.METHODS:By a randomized control study,a total of 60 patients characterized by nonproductive cough andlittle sputum were randomly assigned to receive Guaifenesin Pseudoephedrine Hydrochloride-Codeine Phosphate Oral Solution(Trial Group)or Ambroxol Hydrochloride Oral Solution(Control Group)l0 mL tid for 5～7 d.RESULTS:Both groups had a significant improvement in symptoms including cough and expectoration after treatment(P0.05).CONCLUSION:Guaifenesin Pseudoephedrine Hydrochloride-Codeine Phosphate Oral Solution is more effective in relieving cough than Ambroxol Oral Solution,and it has certain effect in eliminating phlegm.In addition,it is safe and has little adverse reaction.

BACKGROUND:How to control functional activity of donor liver after cardiac death and maintain the optimal function of grafts are the key issues in organ transplantation study.
OBJECTIVE:To preliminarily explore the effect of warm ischemia injury on the morphology and function of rat donor liver after cardiac death.
METHODS:Cardiac death model was established in Sprague-Dawley rats and the successful models were divided into six groups:control group (warm ischemia for 0 minute), warm ischemia 10 group (warm ischemia for 10 minutes), warm ischemia 20 group (warm ischemia for 20 minutes), warm ischemia 30 group (warm ischemia for 30 minutes), warm ischemia 40 group (warm ischemia for 40 minutes) and warm ischemia 50 group (warm ischemia for 50 minutes). The rat liver specimens in each group were cut into ultrathin sections. The structure of liver cells was observed and photographed by electron microscopy. Flameng score was applied to analyze the degree of mitochondrial damage. Liver mitochondria were extracted and then spectrophotometry was used to assess the viability of cytochrome C oxidase.
RESULTS AND CONCLUSION:Under electron microscopy, there were no significant changes in liver cells within 30 minutes of warm ischemia, nuclear membrane was intact, mitochondria mildly swel ed, no mitochondrial crista ruptured, and Flameng score was<2 points. With the extension of warm ischemia time, the cells became swel ing, nuclear chromatin condensated, apoptotic body was clearly visible, mitochondrial matrix coagulated, mitochondria exhibited vacuolation, and Flameng score was 3-4 points. The viability of cytochrome C oxidase showed no significant difference within 30 minutes of warm ischemia, but began to significantly decrease at 40 and 50 minutes. The mitochondrial structure and function after liver injury is not obviously affected by 30 minutes of warm ischemia, and significant changes appear after 40 minutes.

Objective To analyze the major adverse reactions of anti-hyperlipidemia drugs and their influencing factors.Methods The adverse reactions of anti-hyperlipidemia drugs in 579 patients were retrieved from the National Population and Health Scientific Data Platform.An adverse reaction-matched dictionary was established by normalizing the names of anti-hyperlipidemia drugs according to the drug name + dosage form and describing the adverse reactions according to the WHO adverse reaction terminology.The data set dimensions were analyzed by data mining.Results The adverse reaction rate of intravenous drip was 75.4% and manifested as chest distress,itching and dyspnea.The rate of adverse reaction involving organ systems was 61.1% and manifested as systemic injury,fever,discomfort and anorexia.Logistic regression analysis showed that the drug giving route was a factor influencing the severity of adverse reaction.Conclusion The adverse reactions of anti-hyperlipidemia drugs involve systemic,skin and its appendix injury.Drug giving route is the major factor influencing the severity of adverse reaction.

OBJECTIVE:To observe clinical efficacy and safety of levofloxacin and azithromycin in the treatment of community acquired mycoplasma pneumonia (CAMP).METHODS:A total of 108 patients with CAMP were randomly divided into group A and group B (n=54).Group A received intravenous administration of levofloxacin (0.6 g,qd) and group B intravenous administration of azithromycinin (0.5 g,qd) for 7 days.The clinical efficacy and ADR of 2 groups were observed.RESULTS:The total effective rates of group A and group B were 83% and 56%,there was significant difference between 2 groups (P0.05).CONCLUSION:The clinical efficacy of levofloxacin in the treatment for CAMP is better than that of azithromycin.Levofloxacin and azithromycin have good safety.

OBJECTIVE:To study the antioxidant activity in vitro of neutral polysaccharides and its graded component from 3samples of white ginseng and red ginseng. METHODS:The decoction method was used to extract the crude polysaccharides fromwhite ginseng,100 ℃ and 120 ℃ processed red ginseng;the crude polysaccharides were further separated through ion exchangecolumn to extract neutral polysaccharides;Sephadex G-75 gels filter column was used to grade the neutral polysaccharides accordingto the molecular weight,antioxidant activity in vitro of 9 samples in 3 neutral polysaccharides and were detected by DPPH andOH free radical scavenging test and reduction capacity test(FRAP value),and vitamin C was used as positive control. RESULTS:The 3 neutral polysaccharides all obtained component Ⅰ and component Ⅱ after grading. Neutral polysaccharides and its gradedcomponent showed certain antioxidant activity in vitro in a certain concentration range,and increased by concentration increasing.The activity of neutral polysaccharides and component Ⅱ from 120 ℃ processed red ginseng was the strongest,of which 50% inhibitoryconcentration(IC50)on DPPH free radical was 0.258 g/L and 0.253 g/L,on OH free radical was 7.157 g/L and 6.845g/L,FRAP values were 2.8 and 3.0 mmol/L(when concentration was 1.2 g/L),respectively. CONCLUSIONS:The antioxidant activityin vitro from 120 ℃ processed red ginseng is higher than that of 100 ℃ processed red ginseng and white ginseng,in whichcomponent Ⅱ makes important contribution to the antioxidant activity.